Safety device for metal-mixers.



M. M. SUPPES. SAFETY DEVICE ,ron METAL MIXEBS.

APPLICATION FILED JULY 27. 1910 Patented Dec. 13

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M. M. SUPPES. SAFETY DEVICE ron METAL MIXERS.

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INVENTOR APPLICATION FILED JULY 27, 1910.

ESSES.

NORRIS FRY! MAX M. SUPPES,

0F ELYRIA, OHIO.

SAFETY DEVICE FOR METAL-MIXERS.

Specification of Letters Patent.

Patented Dec. 13, 1910.

Application filed July 27, 1910. Serial No. 574,074.

To all whom it may concern:

Be it known that I, MAx M. SUrrns, of Elyria, in the county of Lorainand State of Ohio. have invented a new and useful Safety Device forMetal-Mixers, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specificatlon.

My invention relates to the operation of metal mixers and similarmetallurgical vessels used for refining, storing or handling moltenmetal, and arranged to be tilted or rotated in being emptied.

One object of my invention is to provide a safety device for controllingthe tipping or turning movement of such vessels, and for preventingtipping or rotation of the vessels except at times when such movement isdesired and is being made at the will of the operator.

Another object of the invention is to provide mechanism for operatingthe safety device having power means for moving the locking mechanisminto its inoperative position and having means whereby the apparatus isheld by the operator in inoperative position until released.

A further object of this invention is to provide a safety device havingmeans by which it is automatically moved into and maintained in itsoperative locking position, except when prevented from moving into suchposition by the operator.

In the accompanying drawings, Figure 1 is a sectional side elevationshowing a rotating metal mixer having a safety locking deviceconstructed and arranged in accordance with my invention. Fig. 2 is aplan of the apparatus shown in Fig. 1 showing the construction andarrangement of the safety device, in operative position, as applied to ametal mixer, the mixer vessel being indicated in broken lines in thedrawings, for the sake of clearness.

Referring to the drawings, 2 designates a cylindrical metal mixer orother metallurgical vessel used as a container for molten metal and 3,3, are cradles each having antifriction rollers 4 which are arranged toen gage with the track rings 5, 5, on the periphery of the vessel. Thevessel 2 is provided with the usual refractory lining and the customarycharging and pouring openings through which the metal is charged andwithdrawn. The vessel shown is rotatably mounted upon the cradles 3, 3,a piston in the fluid pressure cylinders G, forming the mixer turningmechanism, being operatively secured to the vessel for that purpose.This construction being old and well-known is not further described. Thevessel 2 is provided with a pouring spout 7 through which the metal ispoured when the spout 7 is depressed or lowered by rotating the vessel 2on the cradles 3 in emptying metal from the vessel.

On the periphery of the vessel and on each side of the vessel, a seriesof ratchet teeth 8 are provided which cooperate with the tilting pawls 9to form the safety looking device by which the vessel is held againstrotation, these pawls being mounted upon the rocking shafts 10 which aresecured in bearings 11 and 12 provided in a suitable location on thestationary cradles 3.

Secured on the outer ends of the rocking shafts 10 are the lever arms13, each having a counter-weight 1 L adjustably secured thereon. Thearms 13 are keyed or otherwise secured to the shafts 10 so as to rocktherewith and connected to the lever arms 13 by links 15 are lever arms16, one end of these arms being pivoted to the brackets 17 which aresecured on the cradles 3. The arms 16 are connected at an intermediatepoint in their length by rods 18 to the cores of the solenoids 19secured on the brackets 20 which are mounted on the side of the cradles3. Also secured on the cradles 3 are the electric switches 21 which areconncctcd by the wires or conductors 22 and 23 with the coil of thesolenoids 19. The switches 21 are also connected by feed wires 24 and 25with a second switch 26 which is mounted in a suitable location adjacentto the place at which the operator is stationed. The operating mechanismfor these switches 21 is connected by the switch arm 21 and link 13 toone end of the pivoted lever arms 13, these switches being provided fora purpose hereinafter described.

The opcrating mechanism of the switch 26 is connected by a link 27 withone end of the lever 28 which is pivotally mounted on the shaft 29, andthe opposite end of the lever 28 is connected to a pin 30 forming atreadle which projects upwardly through the operating platform 31 at apoint adjacent to the operating valve 32 by which the supply of fluidpressure to the cylinders G is controlled in tipping 01' rocking thevespawls 9 into engagement with the ratchet teeth on the vessel 2 andthese counter weights together with the counter-weight effect of thesolenoid cores, will then hold sel 2. Also secured on the end of theshafts 10 are the lever arms 33, the outer ends of which are connectedby the rods 34 with one end of a lever arm 35,which is pivoted on thepins or shafts 36 which are mounted in the pawls in locking engagementwith the m the brackets 37, these brackets being secured ratchet teethuntil again caused to move to a supporting beam for the operatingplatoutwardly by the operator. form The shafts 36 have keyed thereto Itwill be noted that by reason of the th l 3& hi h are connected by r dsshape of the ratchet teeth, the mixer or ves- 33 ith h Outer d f leverar 39 sel can be moved to elevate the pouring spout which are keyed orotherwise secured to the 7 withoutmoving the pawls outwardly by awl r tih ft 29 Al arm 40 means of the pawl operating mechanism. is also kevedor otherwise secured to the The above described operations are reshaft29 and one end of the lever arm 41:0 peated from time to time, when 1t1s desired extends into proximity to the pin or treadle t0 "8 the l elVe se 0 1 lts Cradles to 30 and is provided with a similar pin or 1 111me al out Of the vessel. treadle 41 which also extends upwardly Theadvantages of my nvention wlll be through the floor of the platf r 31,apparent to those skilled in the art. The The operationof my improved aar t apparatus is simple and is eas ly kept in reis as follows: Themixer vessel 2 is rotated p By Its rise the poss bility of over ortipped on the cradles 3 by means of the llnlng o1 tipping of the mix-erby accident fluid pressure cylinders 6 at the will of the 01' throughcarelessness is prevented and operator when fluid pressure is admittedto s qu nt possible loss of life, damage to one or the other of thecylinders 6 through the surrounding property, and loss of molten thOperating valve 32 fh it i d i d metal, is prevented. The pawl isarranged to automatically engage with the ratchet teeth and lock thevessel in a stationary posi tion, except at times when the pawl is movedand held out of engagement with the ratchet teeth. The employment of thesolenoids as shown for actuating the pawl operating mechanism insureseasy and positive movement of the pawls.

Illodifications in the construction and arto lower the pouring spout 7on the vessel 2 so as to pour metal therefrom, the operator will treadupon and depress the treadle 30. This movement of the treadle 30 throughthe lever 28 and connecting rod 27, will throw the electric switch 26into position so as to energize the coils of the solenoids 19. Whenthese coils are energized, the solenoid cores will be lifted and throughthe connecting rods 18 will raise the outer ends of mngement 9 the Partsy b made Within the pivoted lever arms 16, and through the the SCORQ oithe li Chumsconnecting links 15, lift the counter-weight I bellevemyself first to P P d f th lever arms 13 on th h ft 10, ratchet and pawllocking mechanism for This movement of the solenoid cores moves Securing"635913 Containers molten the hafts so as to thrgyv the pavls 9 outJnQtilhln a Stationary position and the b61 11] f engagement ith th at ht, t th 8 tipping as used herein, is intended to Th movement of th pawls9 t f cover movement of any vessel whether tilted, gag-611mm ith th t ht t th 8 ill, rocked, rotated, or otherwise moved to pour through theshaft 10, lever arm 33, conmolten metal therefromnection 34, the leverarms 35 and 36 con- I C1i1i111I nect-ion 38 and lever arms 39 and 40,move 1. Ina tipping vessel for handling molten the treadle 41 into itsdepressed position. metal a safety device comprising ratchet Theoperator then removes his foot from teeth 011 the vessel, a pawlarranged to enthe treadle 30 to the treadle -41 so as to hold gage withthe ratchet teeth to hold the vesthe pawl 9 out of engagement with thesel against tipping movement, means for ratchet teeth 8, the lever 28then being re moving said pawl out of engagement with turned to itsnormal position by the counthe teeth and a solenoid connected to saidter-weight 28. As the counter-weight end pawl moving means formechanically movof the lever arm 13 is lifted its opposite end ing saidpawl into inoperative position.

is lowered and, through the connecting link 2. In a tipping vessel forhandling molten 13 and arm 21. on the switch 21, shuts off metal, asafety device comprising ratchet the supply of current to the solenoidcoils teeth on the vessel, a pawl arranged to en- 19, in this Waypreventing overheat-ing or gage with the teeth and hold the vesselpossible burning out of these coils by 0011- against tipping, means formoving the pawl tinued use. hen it is desired to again out of engagementwith said ratchet teeth,

moving said pawl and a counter-weight for operative engageinto andholding it in its ment'with the ratchet.

3. In a tipping vessel for handling molten metal, a safety devicecomprising ratchet lock the vessel operator will teeth on the vessel, apawl arranged to engage with the ratchet teeth and hold the vesselagainst tipping, means for moving the pawl out of engagement with saidratchet teeth, a counter-weight for moving into and holding said pawl inits operative engagementwith the ratchet teeth, and a solenoid connectedto said pawl moving means for mechanically moving the pawl intoinoperative position.

at. 1n a tipping vessel or handling molten metal, a safety devicecomprising a ratchet and pawl arranged to hold the vessel stationary, asolenoid operativcly connected thereto for moving the pawl out ofengagement with the ratchet and a lever mechanism for moving the pawlout of engagement with the 'atchet by which the pawl is held ininoperative position.

5. In a tipping vessel for handling molten metal, a satety devicecomprising a ratchet and pawl arranged to hold the vessel stationary, asolenoid operatively connected thereto for moving the pawl out ofengagement with the ratchet, a lever mechanism for moving the pawl outof engagementwith the ratehet by which the pawl is held in inoperativeposition, and a counter-weight on the lever mechanism for moving andholding the pawl into engagement with the ratchet.

(3. in a tipping vessel for handling molten metal, a ratchet on thevessel, a pawl operatively connected to said ratchet and ar' ranged tohold the vessel in a plurality of tipped positions, and a solenoidconnected to said pawl for moving said pawl into inoperative position.

7. In a tipping vessel for handling molten metal, a ratchet on thevessel, a pawl operatively connected to said ratchet and arranged tohold the vessel in a plurality of tipped positions, a solenoid connectedto said pawl for moving the pawl into inoperative position, and acounter-weight for moving said pawl into operative engagement with theratchet.

In witness whereof, I have hereunto set my hand.

MAX M. SUPPES.

\Vitnesses D. \V. LAWRENCE, CARL Firemen.

